how long does lsd stay in your system

LSD: 1-3 days in urine and up to 2-3 hours in blood

Alcohol: 3-5 days in urine, 10-12 hours in blood
Amphetamines: 1-3 days in urine and around 12 hours in blood
Barbiturates: 2-4 days in urine and 1-2 days in blood
Benzodiazepines: 3-6 weeks in urine and 2-3 days in blood.
Cannabis: 7-30 days in urine and up to 2 weeks in blood
Cocaine: 3-4 days in urine and 1-2 days in blood